Quick view Details ATI | sku: A5101020 Advanced Technology A5101020 AR-15 Castle Nut Mil-Spec Steel Black MSRP: Was: Now: $11.62 Add to Cart Compare
Quick view Details Magpul | sku: MAG248-BLK Magpul MBUS Rear Back-up Sight .223 Rear Sight, Black - MAG248-BLK MSRP: Was: Now: $49.99 Add to Cart Compare
Quick view ATI | sku: A5101020 Advanced Technology A5101020 AR-15 Castle Nut Mil-Spec Steel Black This steel AR-15 castle nut is virtually indestructible and works with commercial, military, and hybrid buffer tubes. It fits most AR-15s and AR variants, but it is not compatible with 308 rifles. MSRP: Was: Now: $11.62 Add to Cart Compare
Quick view Magpul | sku: MAG248-BLK Magpul MBUS Rear Back-up Sight .223 Rear Sight, Black - MAG248-BLK Magpul MBUS Rear Back-up Sight .223 Rear Sight, Black - MAG248-BLK.The Magpul MBUS Rear flip up sight is a durable color-injection molded folding back up sight. It conveniently folds down and locks into place but flips up with just a press of the button... MSRP: Was: Now: $49.99 Add to Cart Compare